button light keep light until lock screen .light was extinguished when screen off.for this issue ,we think it is a bug.At the same time ,we test open and not open the button light current which is about 11 mA maximum difference.
For the issue ,we provide a program,please confirm whether you can accept it.
If you can't accept it, please give your reasons.
If you can accept it ,we hope to implement this program into our products.
When the ambient light above a certain threshold, the button light turns off.
When ambient light drops below a certain threshold, the button turns on.At the same time .If no one operate phone,button light turn off after a certain time.If operate phone,button light keep light .